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​Symptoms and Signs – Differential Diagnosis of Seizure
• Alcohol abuse/withdrawal
• Brain tumor (primary or metastatic)
• Carotid sinus hypersensitivity
• Hemiparetic migraine
• Hyperventilation, prolonged breath holding
• Hypoglycemia
• Hyponatremia
• Movement disorders (tics, hemiballismus)
• Narcolepsy
• Psychiatric disorders
• Strychnine, phencyclidine poisoning
• Syncope
• Tetanus
• Transient ischemic attack (TIA)
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​Symptoms and Signs – Differential Diagnosis of Pediatric Seizures
FIRST MONTH OF LIFE
First Day
• Hypoxia
• Drugs
• Trauma
• Infection
• Hyperglycemia
• Hypoglycemia
• Pyridoxine deficiency
Day 2–3
• Infection
• Drug withdrawal
• Hypoglycemia
• Hypocalcemia
• Developmental malformation
• Intracranial hemorrhage
• Inborn error of metabolism
• Hyponatremia or hypernatremia
Day >4
• Infection
• Hypocalcemia
• Hyperphosphatemia
• Hyponatremia
• Developmental malformation
• Drug withdrawal
• Inborn error of metabolism
1–6 MONTHS
• As above
6 MONTHS–3 YEARS
• Febrile seizures
• Birth injury
• Infection
• Toxin
• Trauma
• Metabolic disorder
• Cerebral degenerative disease
>3 YEARS
• Idiopathic
• Infection
• Trauma
• Cerebral degenerative disease
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​Symptoms and Signs – Differential Diagnosis of Septicemia
• Acute pancreatitis
• Cardiogenic shock
• Collagen-vascular diseases
• Exposure-induced hypothermia
• Fulminant hepatic failure
• Pulmonary embolism
• Systemic vasculitis
• Toxic ingestion
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​Symptoms and Signs – Differential Diagnosis of Salmonellosis
OTHER CAUSES OF PROLONGED FEVER
• Malaria
• TB
• Brucellosis
• Amebic liver abscess
OTHER CAUSES OF GASTROENTERITIS
• Bacterial: Shigella, Yersinia, Campylobacter
• Viral: Norwalk virus, rotavirus
• Parasitic: Entamoeba histolytica, Giardia lamblia
• Toxic: enterotoxigenic Escherichia coli, Clostridium difficile
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